Solar death ray

I do suffer from greenflash, so my eyes tend to flicker in bright sunlight

When there’s lots of solar activity I must seem, to others, quite an odd sight

Yet these ultraviolet rays from the Sun, have antiseptic properties

They sanitize water here on Earth, and in brains, and help to thaw the freeze

 

Greenflash! A rare optical phenomenon, may occur shortly after sunset or before sunrise

The flash is caused by light just below the horizon, being bent towards the observer’s eyes

Light of shorter wavelengths is bent more, than that of longer wavelengths, that can be seen

So violet and blue light is scattered more, producing light that is perceived, to some, as green